Lubricator



(No Model.) V 2 Sheets-Sheet 2.

W. U. FAIRBAIRN.

, Y LUBRICATOR. No. 291,042. 1 Patnted Jan. 1, 1884.

\/\/\T|f\u:55|5 v ma@ O; V/Kff UNITED STATES PATENT freies.

' To'ctZZ whom, it may concern:

j WILLIAM U. FAIRBAIRN, OF- HYDE PARK', MASSACI-IUSIETTS.

Y Le BRICAVTOR..

"Y, SPECIFICATION forming part of Lette'rsy Patent No. 291,042, dated January ll, 1884.

Application filed February 13, 1883. (No model.)

Be it known that I, WILLIAM U. FA'IRBAIRN,

,of Hyde Park, in the county of Norfolk and State of Massachusetts, a citizen of the United States, have invented a new and useful Improvement in Automatic Oil- Injectors, of Vwhich the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part of this specification in explaining its nature, in which-4 A-Figure '1 is a view part in elevation and part in vertical sectionof an oil-injector conl taining the features of my invention. Fig. 2 is a plan of the wire-gauze hereinafter referred to. Fig. 3 is an elevationof the nozzle or teat hereinafter described. Fig. 4 is a view in vertical section and elevation of a modification which is hereinafter specified.

The invention relates to means for injecting foil into a steam-conducting passage or chamber, whereby it may be fed with the steam-,to any portion of an engine-cylinder, which can belubricated by the oi1bearing steam; and it consists, especially, in means whereby the ex-v tent or rate of t-he feed of the oil is visble at all times.

Referring to the drawingsA represents the cup forming the oil-reservoir. B is its standard.

'.,G is a screw-thread formed upon the end of the standard, by which it is fastened in place.

a. is a pipe in the oil-chamber,` extending from the hole b in the standard to very nearly the top of the chamber, through which oil feeds 'to the steam-passage b, extending through the standard B, and opening into the pipe for connecting it with any'portion of the steam-supply tubes or passages.

D-is a 'pipe or tube, which extends from the cup A upwardly, is attached thereto at d, and connected therewith by the passage cl, which preferably opens into a pipe, d2, extending to or very nearly to the top of the chamber, as shown in Fig. 1. In this pipe is the valve d?,

which should be above the surface of the oil' in the cup, and above this valve is arranged the glass tube E, which isheld in place loe-V tween the two sections d* of the pipe in the same manner that a glass tube of water-gages is held in place, or in any other desirable way.

Between the upper surface or edge of the tube and a shoulder at the lower portion of the pipe d5 is arranged the glass or other teat or nozzle F, the nozzle or teat preferably having a flange, f, by which it is held'in place. This tube D may be connected with a condens ing-chamber, or may itself be a condensingL passage, or it may be supplied with water in any other desirable way. By the passage of the water from the section d5 to the section d* through the glass tube E the rate Aof the'feed of the oil from the chamberAcan be seen. I prefer to arrange on pipe d5 a coupling, c, between the members of which the gauze d? for j straining the water and removing impurities may be placed; but of course this gauze may be placed immediately over the nozzle F, or in any other suitable place in the pipe to ac-V complish the result desired. j

In Fig. 4, I represent the pipe D as being connected with the 'oil-cup A at its'top by means of the short connecting-pipe (ZT, which screws into the neck of the cup, as shown. Its passage d8 opens into the passage d" cut in the cap or plug of the cup, so that the cap or plug d10 not only closes the cup, but also brings in line the passage d, by vwhich the water is fed into the chamber. The cup may also have the glass pipe G, which is held by the projections g, and the passage is connected with the cup by means of the cross-passages g. .This constitutes a gage for showing the height of the oilin the reservoir or chamber.` There may be attached to this device a valve or cock, "g2, for providing means for drawing the water from the cup when desired, or such valve or cock may be attached to the lower projection, g, as represented.

To fill and operate the injector, the cap or plug d1 ofthe oil-reservoirA is removed and the chamber iilled with lubricatingoil. The cap is then replaced and the valve d3 opened, to permit the water to pass down through the pipe D into the chamber A, and lift the oil to the top of the feed-pipe a. The valve d is then closed sufficiently to check the flow of the water through the pipe, and the water accumulates in the portion of the pipe d4 above the valve, gradually compressing the air therein, as it rises, until the pressure is such that the water in the portion ofthe pipe d5 will not IOO pass down through the nozzle or teat F. By opening the valve d suiiiciently to allow a slight escape of water therefrom, t-he air press ure is relieved suiiiciently to allow the nozzle or teat F to feed water to take the place of that which leaves the tube d, and the rate at which this water is fed varies from the amount that is allowed to escape from the pipe d* by the valve d, and it may be in the shape of slow drops or rapid drops, or in asmall stream, if desired. The water passes from the pipe d* into the oil-chamber A, and raises the oil therein, and causes a feed of oil equivalent in amount or extent to the amount of water that passes through the teat or nozzle F, and of course as the rate at which the oil is being fed is indicated by the delivery ofthe water from the nozzle or teat F, and as the nozzle is in closed in a glass tube, which permits such delivery to be observed at all times, and as the valve d controls the amount of water thus delivered, it follows that the extent or quantity of oil that is being fed can be determined and regulated at all times.

\Vhile I have represented the valve d as being arranged below the sight-feed chamber E. it need not be so located, as it may be arranged above the chamber, and the same effect will be produced; and whichever construction is employed the opening into the said chamber from the pipe dshould be by means of a teat or nozzle having a small. opening through which air cannot escape into and through the pipe, and by so connecting the passage the air in the pipe D, as the pipes ll with water, is compressed in the upper part of the chamber E to such an extent that when no valve is employed below it, the compressed air balances the pressure, and any slight accession of water from above will cause the injectorto feed, while at the same time there will always remain a suf iicient portion of the chamber which is filled with compressed air only to afford opportunity for the water to leave the teat or nozzle in drops.

It' desired, a pipe may be attached to the plug d with which the passage d shall connect, which pipe shall be substantially U- shaped-that is, itwill extend to very nearly the bottom of the cup, then upwardly to the top-so that the. water will be discharged into the cup above the oil. This is to prevent oil from being forced into the passage d" and tube D.

I am aware that the patent to Charles H. Harrub, No. 253,282, dated February 7, 1882, shows and describes a lubricator having two sight-feed tubes, one of which is filled with oil through which water is dropped from a water column, and the other of which is illed with 6o water through which oil from the reservoir is dropped; but as my sight-feed chamber is not filled with either oil or water, and as I do not feed the indicating-drop downwardly through oil or upwardly through water, I consider that the said patented lubricator does not contain my invention.

Having thus fully described my invention,

I claim and desire to secure by Letters Patent of the United States- 7o 1. In an oil-injector, the combination of the Oil-reservoir A and pipe E opening therein, and having the transparent chamber or tube E partially filled with air under pressure, through which water passes in drops, all sub- 7 5 stantially as and for the purposes described.

2. The combination of the oil-chamber, the tube or pipe D connected therewith, and the sight chamber or tube E, dividing the tube or pipe D into two parts above the oil-chamber, 8o and the controlling-valve el, all substantially as and for the purposes described.

3. The combination of the reservoir or cup A, the pipe D connected therewith, the chamber E, the nozzle F, arranged above the oilchamber, and the controlling-valvc d, all substantially as and for the purposes described.

et. The combination, in an oil-injector, of the chamber or tube E, the nozzle or teat F, the tube or pipe D, and thc gauze di, all sub- 9o stantially as and for the purposes described.

5. The combination, in an oil-injector, of the reservoir A, having the oil-gage G, with the pipe or tube D, having a sight-teed-indicating device above the height of the oil in the reservoir, all substantially as and for the purposes described.

6. In an oil-injector in which the oil is injected by the weight of a water column, a sightfeed, substantially as specified, arranged in anloo air-chamber in said column, and a valve for controlling the passage of water through slid air-chamber, all substantially as and for the purposes described.

7. rIhe combination of the tube D and gauze (Z7, with the oil-cup A and screw-plug d1, having the passage d, all substantially as and for the purposes described.

Executed at Boston, Massachusetts, on the 9th da-y of February, 1883.

NVM. U. FAIRBAIRN.

In presence of- F. F. RAYMOND, 2d, WILLARD C. Foce. 

